libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8/members.cc

   1 // Copyright (C) 2017-2021 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <codecvt>
  21 #include <testsuite_hooks.h>
  22
  23 const int bomlen = 3; // UTF-8 BOM is 24 bits
  24
  25 void
  26 test01()
  27 {
  28   const int maxlen = 3;
  29
  30   std::codecvt_utf8<char16_t> c;
  31   VERIFY( c.always_noconv() == false );
  32   VERIFY( c.encoding() == 0 );
  33   VERIFY( c.max_length() == maxlen );
  34
  35   std::codecvt_utf8<char16_t, 0x10ffff, std::consume_header> c_bom;
  36   VERIFY( c_bom.always_noconv() == false );
  37   VERIFY( c_bom.encoding() == 0 );
  38   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
  39 }
  40
  41 void
  42 test02()
  43 {
  44   const int maxlen = 4;
  45
  46   std::codecvt_utf8<char32_t> c;
  47   VERIFY( c.always_noconv() == false );
  48   VERIFY( c.encoding() == 0 );
  49   VERIFY( c.max_length() == maxlen );
  50
  51   std::codecvt_utf8<char32_t, 0x10ffff, std::consume_header> c_bom;
  52   VERIFY( c_bom.always_noconv() == false );
  53   VERIFY( c_bom.encoding() == 0 );
  54   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
  55 }
  56
  57 void
  58 test03()
  59 {
  60 #ifdef _GLIBCXX_USE_WCHAR_T
  61   const int maxlen = sizeof(wchar_t) == 4 ? 4 : 3;
  62
  63   std::codecvt_utf8<wchar_t> c;
  64   VERIFY( c.always_noconv() == false );
  65   VERIFY( c.encoding() == 0 );
  66   VERIFY( c.max_length() == maxlen );
  67
  68   std::codecvt_utf8<wchar_t, 0x10ffff, std::consume_header> c_bom;
  69   VERIFY( c_bom.always_noconv() == false );
  70   VERIFY( c_bom.encoding() == 0 );
  71   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
  72 #endif
  73 }
  74
  75 int
  76 main()
  77 {
  78   test01();
  79   test02();
  80   test03();
  81 }